Sayyiduna Abdullah bin Mughaffal (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "None of you should urinate in his bathing place and then bathe or perform ablution in it, for most of the whisperings (waswasah) come from it."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 473
Al-Hasan bin Ali narrates this hadith from Ash'ath bin Abdullah.
(b) Imam Bukhari (may Allah have mercy on him) said: This hadith is known only through this chain, and it has also been said that this Ash'ath is Ibn Jabir al-Huddani. Ma'mar said that Ash'ath bin Abdullah narrated it from al-Hasan. The Shaykh said: It has also been said that he is Ash'ath bin Abdullah bin Jabir, and Imam Bukhari (may Allah have mercy on him) mentioned him in al-Tarikh al-Saghir.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 474
It is narrated from Sayyiduna Abdullah bin Mughaffal (may Allah be pleased with him) that he disliked urinating in the bathing place and would say: "It is a cause of whisperings (waswasah)." Yazid bin Ibrahim al-Tustari narrated it this way.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 475
Sayyiduna Abdullah bin Mughaffal (may Allah be pleased with him) was asked about a man who urinates in his bathing place. He said: I fear that he will be afflicted with whisperings (waswasah).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 477
Humayd bin Abd al-Rahman al-Himyari (may Allah have mercy on him) said: I met a Companion, just as Sayyiduna Abu Hurayrah (may Allah be pleased with him) is a Companion. He said that the Prophet (peace and blessings be upon him) forbade us from "combing the hair every day and urinating in the bathing place."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 478