‏الصلاة : Hadeeth No:1120 'A'isha reported: The Prophet of Allaah (may, sallAllaahu alayhi wa sallam) saw spittle or snot or sputum, sticking to the wall towards Qibla and scratched it off....

‏الزكاة : Hadeeth No:2139 Abu Sa'id al-Khudri reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: No Sadaqa is payable on the grains and dates till it (comes to the Weight) of five wasqs, or less than five heads of camels, or less than five uqiyas (of silver)....