Salim bin Abdullah bin Umar narrates from his father (may Allah be pleased with them both) that he (peace and blessings be upon him) said: "There is no prostration of forgetfulness for a slight rising in the prayer; rather, the prostration of forgetfulness becomes due by standing instead of sitting, or by sitting instead of standing."
This hadith is narrated only by Abu Bakr al-Ansi, and he is majhul (unknown).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3853
Hadith Gradingمحدثین:ضعيف
Hadith Takhrij«ضعيف۔ اخرجه الدار قطني في سننه 1/ 378/ 2»