The reciter: Abu Bakr ibn Abi Shaybah and Zuhayr ibn Harb both narrated to us from Ibn 'Ulayyah. Zuhayr said: Ibn 'Ulayyah narrated to us from al-Qasim ibn Mahrān from Abū Rafi' from Abū Hurayrah:
Abu Huraira reported that the Messenger of Allah (ﷺ) saw some sputum in the direction of the Qibla of the mosque. He turned towards people and said: How Is it that someone amongst you stands before his Lord and then spits out in front of Him? Does any one of you like that he should be made to stand in front of someone and then spit at his face? So when any one of you spits, he must spit on his left side under his foot. But if he does not find (space to spit) he should do like this.
أن رسول الله صلى الله عليه وسلم 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 Sahih Muslim 550a And al-Qasim described
spat in his cloth and then folded it and rubbed it
فتفل في ثوبه ثم مسح بعضه على بعض Sahih Muslim 550a.