Silsilah as-Sahihah 665 — Etiquettes of spitting during prayer

Sayyiduna Tariq bin Abdullah (may Allah be pleased with him) narrates from the Prophet (peace and blessings be upon him), he said: "When you pray, do not spit in front of you nor to your right side, but if there is space on your left side then spit there, otherwise spit beneath your feet and rub it in."