Takhrij Hadith 707: "The angels invoke blessings upon…"

The angels invoke blessings upon one of you as long as he remains in his place of prayer and does not break his state of purification, saying: “O Allah, forgive him. O Allah, have mercy on him”. One of you continues to be considered in prayer so long as the prayer keeps him there, and nothing prevents him from returning to his family except the prayer.