The Messenger of Allah ﷺ saw some phlegm on the qiblah wall of the mosque. He turned to the people and said, "What is the matter with one of you who stands facing his Lord and then spits phlegm in front of Him? Would any of you like to be faced and have someone spit phlegm in his face? When one of you needs to spit phlegm, let him spit to his left under his foot. If he cannot, then let him do like this."Qasim demonstrated by spitting into his garment, then rubbing part of it against the other.
أن رسول الله ﷺ رأى نخامة في قبلة المسجد. فأقبل على الناس فقال: ما بال أحدكم يقوم مستقبل ربه فيتنخع أمامه؟ أيحب أحدكم أن يستقبل فيتنخع في وجهه؟ فإذا تنخع أحدكم فليتنخع عن يساره تحت قدمه. فإن لم يجد فليقل هكذا. ووصف القاسم، فتفل في ثوبه، ثم مسح بعضه على بعض.