A man supplicating with the inside of his palm

Ibn Muhayriz said that the Messenger of Allah (peace and blessings be upon him) said: "When you ask Allah, ask with the inner part of your palms, and do not ask with the backs of your palms."

Layth said that Shahr said: Asking is done like this, and he spread his hands with the palms facing his face. And he said: Seeking refuge is done like this, and he turned his palms over.

Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) was supplicating at Arafah, and he (peace and blessings be upon him) had raised both his hands in such a way that the backs of his hands were in front of his face and the inner part of his hands faced the ground.

Sayyiduna Ibn Abbas (may Allah be pleased with them both) said: Sincerity is like this, and he pointed with his finger; and supplication is like this, meaning with the inner part of both his palms; and seeking guidance (istikharah) is like this. And he then raised both his hands and turned their backs towards his face.