It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that a woman used to pick up scraps and twigs, etc., from the mosque. Then the rest of the hadith is mentioned up to the point of performing prayer at her grave.
Hadith Referenceصحيح ابن خزيمه / جماع أبواب فضائل المساجد وبنائها وتعظيمها / 1300