The Book of Du'a (Supplications)
كتاب الدعوات
Chapter 1: Issues regarding Supplications, their Virtues and Supplications of the Prophet (pbuh)
The Messenger of Allah (ﷺ) said, "One of Prophet Dawud's supplications was: 'Allahumma inni as'aluka hubbaka, wa hubba man yuhibbuka, wal-'amalalladhi yuballighuni hubbaka. Allahumm-aj'al hubbaka ahabba ilayya min nafsi, wa ahli, wa minal-ma'il-baridi (O Allah! I ask You for Your Love, the love of those who love You, and deeds which will cause me to attain Your Love. O Allah! Make Your Love dearer to me than myself, my family and the cold water)."'[At- Tirmidhi].
Chapter 2: The Excellence of Supplicating in one's Absence
I heard the Messenger of Allah (ﷺ) saying, "Whenever a Muslim supplicates for his (Muslim) brother in his absence, the angels say: 'May the same be for you too'."[Muslim].
The Messenger of Allah (ﷺ) said, "The supplication of a Muslim for his (Muslim) brother in his absence will certainly be answered. Everytime he makes a supplication for good for his brother, the angel appointed for this particular task says: 'A meen! May it be for you, too'."[Muslim].
Chapter 3: Some Verdicts Pertaining to Supplications
The Messenger of Allah (ﷺ) was asked: "At what time does the supplication find the greatest response?" He (ﷺ) replied, "A supplication made during the middle of the last part of the night and after the conclusion of the obligatory prayers."[At-Tirmidhi].
The Messenger of Allah (ﷺ) said, "Whenever a Muslim supplicates Allah, He accepts his supplication or averts any similar kind of trouble from him until he prays for something sinful or something that may break the ties of kinship." Upon this someone of the Companions said: "Then we shall supplicate plenty." The Messenger of Allah (ﷺ) said, "Allah is more plentiful (in responding)."[At- Tirmidhi].
Chapter 4: Superiority of Auliya' and their Marvels
Two Companions of the Prophet (ﷺ) left his home in a very dark night with something like lights in front of them; when they separated, each of them had one light in front of him till they arrived home.[Al- Bukhari].Other narrations reported in Al-Bukhari say that the two men were Usaid bin Hudhair and 'Abbad bin Bishr (May Allah be pleased with them).
I never heard 'Umar (May Allah be pleased with him) relating anything that he conceived it to be so-and-so, but that it proved to be as he had conceived it."[Al-Bukhari].