Sayyiduna Abdullah bin Amr (may Allah be pleased with him) says: Sayyidah Busrah bint Safwan bin Nawfal (may Allah be pleased with her) asked the Prophet (peace and blessings be upon him) about a woman who moves her hand and her hand touches her private part. The Prophet (peace and blessings be upon him) said: She should perform ablution.
Al-Tabarani recorded it in al-Mu'jam al-Kabir; its chain contains a narrator, Abdullah bin al-Mu'ammal, whom Ahmad, and Yahya bin Ma'in according to one report, declared da'if (weak), while according to another report Yahya declared him thiqah (trustworthy). Ibn Hibban mentioned him in his book al-Thiqat.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الطهارة / 1271