It is narrated from Sayyiduna Wa'il bin Hujr (may Allah be pleased with him) that he said: I was present with the Messenger of Allah (peace and blessings be upon him). He (peace and blessings be upon him) set out for the mosque and entered the mihrab, then he raised his hands as he said the takbir, then he placed his right hand upon his left hand over his chest.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2335
It is narrated from Sayyiduna Wa'il (may Allah be pleased with him) that he saw the Messenger of Allah (peace and blessings be upon him) place his right hand upon his left hand, then place both of them upon his chest.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2336
It is narrated from Uqbah bin Suhban that Sayyiduna Ali (may Allah be pleased with him) said concerning "So pray to your Lord and sacrifice" [Surah al-Kawthar: 2] that its meaning is placing the right hand upon the middle of the left hand and placing them both upon the chest.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2337
Asim al-Ahwal narrates from a man, and he from Sayyiduna Anas (may Allah be pleased with him), and he from the Prophet (peace and blessings be upon him), similarly.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2338
It is narrated from Abu al-Jawza' that Sayyiduna Ibn Abbas (may Allah be pleased with them both) said concerning this statement of Allah Almighty, "So pray to your Lord and sacrifice" [Surah al-Kawthar: 2], that what is meant by it is placing the right hand upon the left hand on the chest in prayer.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2339
It is narrated from Abu al-Zubayr (may Allah have mercy on him) that he said: Ata (may Allah have mercy on him) instructed me to ask Sa'id (bin Jubayr) (may Allah have mercy on him) where the hands should be in prayer: above the navel or below the navel? So I asked him, and he said: Above the navel.
Abu Mijlaz Lahiq bin Humayd said the same. The most authentic report narrated in this chapter is the report of Sa'id bin Jubayr and Abu Mijlaz. It has been narrated from Ali (may Allah be pleased with him) that it is below the navel, but there is weakness in its chain.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2340
Abu Juhayfah (may Allah be pleased with him) narrates from Sayyiduna Ali (may Allah be pleased with him) that he said: "Placing the palm upon the palm below the navel in prayer is Sunnah."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2341
It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Sunnah in prayer is that the right hand be placed upon the left hand below the navel.
This Abd al-Rahman bin Ishaq is al-Wasiti al-Qurashi; Ahmad bin Hanbal, Yahya bin Ma'in, al-Bukhari and others criticised him, and Abd al-Rahman bin Ishaq is matruk (abandoned).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2342