‏الزهد والرقائق‏ : Hadeeth No:7132 The son of Abu Said al-Khudri reported on the authority of his father that Allaah's Messenger (sallAllaahu alayhi wa sallam) said. When one of you yawns while engaged in prayer, he should try to restrain so far as it lies in his power, since it is the Satan that enter therein....

‏الصيام : Hadeeth No:2459 Abu Huraira reported that a person had intercourse with his wife during Ramadan (while fasting). He asked for the religious verdict (about it) from the Messenger of Allaah (sallAllaahu alayhi wa sallam), whereupon he (the Prophet) said: Can you find a slave (to grant him freedom)? He said: No. He (t...