Manbudh narrates from his mother, who said: We were travelling with Maymunah (may Allah be pleased with her). She passed by a pool in which there was camel dung and beetles, and she drank from it and performed ablution with it. Sufyan says: There is no doubt in this; when she intended to drink, she drank, and when she intended ablution, she performed ablution.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 1223