Riyad as-Salihin 452
The Book of Miscellany
Excellence of Weeping out of Fear from Allah (swt)
Anas bin Malik (May Allah be pleased with him) reported: After the death of Messenger of Allah (ﷺ), Abu Bakr said to 'Umar (May Allah be pleased with them): "Let us visit Umm Aiman (May Allah be pleased with him) as Messenger of Allah (ﷺ) used to visit her." As we came to her, she wept. They (Abu Bakr and 'Umar (May Allah be pleased with them) said to her, "What makes you weep? Do you not know that what Allah has in store for His Messenger (ﷺ) is better than (this worldly life)?" She said, "I weep not because I am ignorant of the fact that what is in store for Messenger of Allah (ﷺ) (in the Hereafter) is better than this world, but I weep because the Revelation has ceased to come." This reply moved both of them to tears and they began to weep along with her. [Muslim].