Abdullah bin Dinar عبد الله بن دينار العدوي · The Book of Purification and its Sunnah

"The Messenger of Allah forbade facing the Qiblah when urinating. But I saw him, one year before he died, facing the Qiblah (while urinating)."

"The Messenger of Allah said: 'When anyone of you urinates, let him squeeze his penis three times (to remove the remaining urine drops)." (Da'if) Another chain with similar wording.

"The Messenger of Allah was asked about prostatic fluid and he said: 'For that ablution (is necessary), and for semen, bath is necessary.'"