It is narrated about Sayyiduna Abdullah bin Umar, may Allah be pleased with him. He saw a man performing prayer. The man performed a lengthy prayer and prolonged it greatly. Sayyiduna Abdullah inquired, "Who knows this person?" So a man replied, "I do." Sayyiduna Abdullah said, "If I had known him, I would have guided him to prolong his bowing (ruku) and prostration (sajdah), because I heard the Noble Prophet, peace and blessings be upon him, say: 'When a servant stands to perform prayer, his sins are brought and placed upon his head or his shoulders, and when he bows or prostrates, they fall away from him.'"
Hadith Referenceصحیح ابن حبان / كتاب الصلاة / 1734
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح لغيره - لكن من حديث عبد الله بن عمر - «الصحيحة» (1398).فضيلة الشيخ العلّامة شُعيب الأرناؤوطحديث صحيح رجاله ثقات إلا أن العلاء بن حارث قد اختلط، لكنه متابع.