[Machine] The Prophet saw impurity in the direction of the mosque, so he cleared it with a piece of wood or something similar. Then he said, "When one of you stands up for prayer, he should not spit in front of him or to his right, for his right is the angel's place of honor. Rather, he should spit to his left or under his left foot."

أَنَّ النَّبِيَّ ﷺ رَأَى نُخَامَةً فِي قِبْلَةِ الْمَسْجِدِ فَحَتَّهَا بِمَرْوَةٍ أَوْ بِشَيْءٍ ثُمَّ قَالَ إِذَا قَامَ أَحَدُكُمْ إِلَى الصَّلَاةِ فَلَا يَتَنَخَّمَنَّ أَمَامَهُ وَلَا عَنْ يَمِينِهِ فَإِنَّ عَنْ يَمِينِهِ مَلَكًا وَلَكِنْلِيَتَنَخَّمْ عَنْ يَسَارِهِ أَوْ تَحْتَ قَدَمِهِ الْيُسْرَى

The Messenger of Allah ﷺ said: When a man stands with the intention of saying prayer, or if any of you says prayer, he should not spit before him, nor at his right side; but he should do so at his left side, if there is a place for it; or he should spit under his left foot and then rub it off. (Using translation from Abū Dāʾūd 478)

قَالَ رَسُولُ اللهِ ﷺ «إِذَا قَامَ أَحَدُكُمْ فِي الصَّلَاةِ فَلَا يَبْزُقَنَّ أَمَامَهُ وَلَا عَنْ يَمِينِهِ وَلَكِنْ عَنْ يَسَارِهِ إِنْ كَانَ فَارِغًا أَوْ تَحْتَ قَدَمِهِ الْيُسْرَى»

"إِنَّ رَسُولَ اللهِ ﷺ رَأَى نُخَامَةً في قِبْلَةِ الْمَسْجِدِ فَحَكَّهَا بِمَدَرةٍ أَوْ بِشَىْءٍ، ثُمَّ قَالَ: إِذَا قَامَ أَحدُكُمْ إِلَى الصَّلَاةِ فَلَا يَتَنَخَّمَنَّ أمَامَهُ وَلَا عَنْ يَمِينِهِ، فَإِنَّ عَنْ يَمِينِهِ مَلَكًا، وَلَكِنْ يَتَنَخَّمُ عَنْ يَسَارِهِ أَوْ تَحْتَ قَدمِهِ الْيُسْرَى".