Abu Sa’id al-khudri said:
The Prophet ﷺ liked the twigs of the date-palm, and he often had one of them in his hand. He entered the mosque and saw phlegm in the wall towards qiblah and he scraped it. He then turned towards people in anger and said: Is any one of you is pleased to spit in his face? When any of you faces qiblah, he indeed faces his Lord, the Majestic the Glorious: the angels are at right side. Therefore, he should not spit on his right side or before him towards qiblah. He should spit towards his left side or beneath his foot. If he is in a hurry, he should do so-and-so. Describing it Ibn ‘Ajlan said: He should spit in his cloth and fold a part of it over the other.

حَدَّثَنَا يَحْيَى بْنُ حَبِيبِ بْنِ عَرَبِيٍّ، حَدَّثَنَا خَالِدٌ، - يَعْنِي ابْنَ الْحَارِثِ - عَنْ مُحَمَّدِ بْنِ عَجْلاَنَ، عَنْ عِيَاضِ بْنِ عَبْدِ اللَّهِ، عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ، أَنَّ النَّبِيَّ ﷺ كَانَ يُحِبُّ الْعَرَاجِينَ وَلاَ يَزَالُ فِي يَدِهِ مِنْهَا فَدَخَلَ الْمَسْجِدَ فَرَأَى نُخَامَةً فِي قِبْلَةِ الْمَسْجِدِ فَحَكَّهَا ثُمَّ أَقْبَلَ عَلَى النَّاسِ مُغْضَبًا فَقَالَ " أَيَسُرُّ أَحَدَكُمْ أَنْ يُبْصَقَ فِي وَجْهِهِ إِنَّ أَحَدَكُمْ إِذَا اسْتَقْبَلَ الْقِبْلَةَ فَإِنَّمَا يَسْتَقْبِلُ رَبَّهُ جَلَّ وَعَزَّ وَالْمَلَكُ عَنْ يَمِينِهِ فَلاَ يَتْفُلْ عَنْ يَمِينِهِ وَلاَ فِي قِبْلَتِهِ وَلْيَبْصُقْ عَنْ يَسَارِهِ أَوْ تَحْتَ قَدَمِهِ فَإِنْ عَجِلَ بِهِ أَمْرٌ فَلْيَقُلْ هَكَذَا " . وَوَصَفَ لَنَا ابْنُ عَجْلاَنَ ذَلِكَ أَنْ يَتْفُلَ فِي ثَوْبِهِ ثُمَّ يَرُدَّ بَعْضَهُ عَلَى بَعْضٍ .