Does everything that exits the two passages nullify ablution, and what is the evidence for that?

Ablution is nullified by anything that exits from the two private parts (front and back), and this includes urine and feces, based on the Hadith (definition) of Safwan ibn Assal. It also includes wind (gas), based on the Hadith of Abu Hurairah: "The prayer of one who nullifies his ablution is not accepted until he performs ablution." A man from Hadhramaut asked, "What is 'nullifying ablution', O Abu Hurairah?" He replied, "Passing wind silently or audibly." Also, semen, prostatic fluid (madhiy), and pre-seminal fluid (wadiy). Madhiy and wadiy necessitate ablution, while semen necessitates ritual bathing (ghusl (definition)). Blood that exits from the private part (vagina), and rare excretions such as stones and worms.