Sayyidah Aishah (may Allah be pleased with her) said: When Sayyiduna Abu Bakr (may Allah be pleased with him) saw some relief in the Prophet (peace and blessings be upon him), he asked his (peace and blessings be upon him) permission to go to Bint Kharijah, and he (peace and blessings be upon him) gave him permission, in a long hadith.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 20939