Musannaf Ibn Abi Shaybah 31116 — A man's supplication for an absent

Abu al-Zubayr said: Safwan bin Abdullah bin Safwan, who was married to al-Darda, came to his wife and found Umm al-Darda with her, while Sayyiduna Abu al-Darda (may Allah be pleased with him) was not there. Umm al-Darda said to him: "Do you intend to perform Hajj this year?" Safwan said: "Yes." Umm al-Darda said: "Then supplicate for good for us too, for the Prophet (peace and blessings be upon him) used to say: 'A man's supplication for his brother in his absence is accepted. Near the head of the one supplicating there is an angel who says Amin to his supplication. Whenever he supplicates for good for his brother, the angel says: Amin, and may you be granted the same.'" Then Safwan bin Abdullah said: I went to the market and met Sayyiduna Abu al-Darda (may Allah be pleased with him), and he too narrated this hadith to me from the Prophet (peace and blessings be upon him).