O people of faith!
If you do not wish to enter a humiliating condition of slavery, come to your senses and enter and take refuge in the citadel of: (Indeed the believers are brothers.) to defend yourselves against those oppressors who would exploit your differences! Otherwise you will be able neither to protect your lives nor to defend your rights. (Twenty-Second Letter, First Topic)

A person who sees the good in things has good thoughts. And he who has good thoughts receives pleasure from life. (The Letters)

Then contemplate (O man!) the tokens of Allah's Mercy! how He gives life to the earth after its death: verily the Same will give life to the men who are dead: for He has power over all things. (Ar-Room, 30:50.)

When you meet a person returning from hajj, greet him. Shake hands with him and ask him to pray to Allah for your forgiveness before he enters his house because his sins have been forgiven. (Hadith - Jamiu's Saghir 847)

In the month of Ramadan, the instinctual soul of everyone, from the richest to the poorest, may understand that it does not own itself, but is totally owned; that it is not free, but is a slave. It understands that if it receives no command, it is unable to do the simplest and easiest thing, it cannot even stretch out its hand towards water. Its imaginary dominicality is therefore shattered; it performs its worship and begins to offer thanks, its true duty. (Risale-i Nur Collection)

To Allah belongs all that is in the heavens and on earth; to Him do all questions go back (for decision). (Surah Aal-e-Imran – 109)

O soul!
If, in a brief life, you want to do something that will profit you infinitely in the hereafter, and you want every moment of your life to be as beneficial as a life-time, and if you want to transform your habitual actions into worship and your heedlessness into awareness of the Divine presence,
Follow the Illustrious Practices of the Prophet (PBUH).
(The Words)

"After belief, the most elevated truth in Islam is the obligatory prayers" (The Words)

Man's nature and spiritual faculties show that he is created for worship. (The Words)

If a person sacrifices an animal willingly and expecting its reward from Allah, it will be a barrier for him against hellfire. (Hadith - Jamius-Saghir - 8825 )

If you love wealth, seek it not with greed but with contentment, so that you may have it in abundance. Greed destroys sincerity and damages actions in regard to the Hereafter. Twenty - Second Letter - Second Topic

“Do not worry! You have an immortal youth; a shining, endless life awaits you. You will be joyfully reunited with the children and relatives you have lost. All your good deeds have been preserved and you will receive your reward.” (The Rays)

"Anyone who performs fasting for six days in the month of Shawwal after fasting the whole month in Ramadan is regarded to have performed fasting in the whole year." (Hadith - Riyadu's-Salihin)

Man’s first master and most influential teacher is his mother. (The Flashes)

The Pre-Eternal Designer turns over in front of our eyes the white page of winter and opens the green pages of spring and summer. Then He inscribes on the page of the earth's surface, with the pen of Power and Destiny, in the most beautiful form, more than three hundred thousand species of creation. Not one encroaches upon another. He writes them all together, but none blocks the path of another. In their formation and shape, each is kept separate from the other without any confusion. There is no error in the writing. (The Words)

The one who offers the supplications knows that there is Someone Who hears the wishes of his heart, Whose hand can reach all things, Who can bring about each of his desires, Who takes pity on his impotence, and answers his poverty. (The Words)

If a person treats something to his family and the people in his house on the Day of Ashura (the tenth day of the month of Muharram), Allah Almighty will increase his sustenance during the whole year. (Hadith, at-Targhib wa't-Tarhib, 2:116.)

The clouds, suspended between the sky and the earth, water the garden of the world in the most wise and merciful fashion, furnish the inhabitants of the earth with the water of life, modify the natural heat of life, and hasten to bestow aid wherever it is needed. (Ayat ul-Kubra)

Everything is in reality good, or in itself good, or good in regard to its results. (The Words)

The prescription for a sick age, an ailing nation, an ill member, is to follow the Qur’an. (The Letters)

Come, now look carefully at a tree! See its delicate mouth within the orderly emergence of the leaves in spring, and the blossoms opening in a measured manner, and the fruits swelling with wisdom and mercy and dancing at the blowing of the breeze in the hands of the branches like innocent children. (Risale-i Nur Collection - The Words)

And if ye are in doubt as to what We have revealed from time to time to Our servant, then produce a Surah like thereunto; and call your witnesses or helpers (if there are any) besides Allah, if your (doubts) are true. But if ye cannot and of a surety ye cannot then fear the Fire whose fuel is Men and Stones, which is prepared for those who reject Faith. (al-Baqara, 23-24)

The Quran has challenged the deniers since the first days of its revelation with the verses above and similar ones; it has asked those who doubted that this book was the word of Allah to produce similar verses. If the polytheists who lived in a period when literature was in demand and among whom were many orators and rhetoricians could have answered this challenge, they would have won their struggle against Muslims through words and they would not have to fight Muslims. After fourteen centuries that passed, the Quran is still living in the tongues and hearts of billions of Muslims on the one hand and is still challenging the deniers in the same way on the other hand.

Love this world and the creatures in it as pointing to a meaning beyond themselves, like a word. Do not love them just for themselves. Say, “How beautifully they have been made.” Do not say, “How beautiful they are.” (The Words)

Fasting in Ramadan strikes direct blows at the soul’s pharaoh-like front, shattering it. It demonstrates its impotence, weakness, and want. It makes it realize that it is a slave. (The Letters)