f9.0 What invalidates, is offensive, or obligatory in prayer extraneous speech
THINGS OFFENSIVE IN PRAYER
f9.9 It is offensive to perform the prayer while one is holding back from urinating or defecating, (O: If enough time remains to perform the prayer, the sunna is to relieve oneself first, even when one fears missing praying with a group, since it diminishes one's awe and humility in prayer.)
f9.10 It is offensive to pray in the presence of food or drink one would like to have, unless one fears that prayer's time will end. It is offensive during the prayer:
(1) to interlace the fingers;
(2) to turn (N: the head when there is no need. As for turning the chest from the directions of
prayer (qibla), it invalidates the prayer except when there is an excuse such as in extreme peril, or when performing a nonobligatory prayer during a journey);
(3) to look to the sky;
(4) to look at something distracting;
(5) to gather one's clothes or hair with the hand, tuck one's hair under a turban, or wipe the dust from one's forehead;
(6) to yawn, though if it overcome one, one should cover mouth with the hand;
(7) to exaggerate in lowering one's head while bowing;
(8) or to put one's hands on the hips.
f9.11 It is offensive during the prayer to spit to the front of one or to the right. Rather, one should expectorate to the left, in the left, in the hem of one's garment, or under the foot (N: when one is praying in a desert or similar). (O: It is unlawful to spit in a mosque except into the left hem of one's garment (N:or a handkerchief. The slight motions necessary to take out one's handkerchief and return it do not harm, as they are inconsiderable).)