Short answer
Yes. Raising the hands with palms facing up is a sunnah of dua and a reason for it to be answered: the Prophet ﷺ said Allah is too generous to send back empty the hands raised to Him. It is not a condition, so a dua without raised hands is still heard.
Raising the hands in dua is mustahabb, with the palms open toward the sky at about chest level. Raising them for dua after the fard prayers is mustahabb in the Hanafi school, as long as it is not treated as a required part of the salah.
The four schools agree on this.
Explanation
The Prophet ﷺ said: "Your Lord is shy and generous; He is shy, when His servant raises his hands to Him, to return them empty." He also taught to ask Allah with the palms of the hands, not their backs. Anas reports that in a dua for rain he raised his hands so high that the whiteness of his armpits could be seen. The four schools agree that raising the hands is recommended.
Anas also said he did not raise his hands in any of his duas except for rain. The scholars explain that Anas meant raising them that high, since other authentic reports show the Prophet ﷺ raising his hands in many duas.
- Hold your palms up and open, at chest level, together or slightly apart.
- Face the qibla if you can.
- Do not raise your hands during the duas inside the prayer, such as in sujood or the tashahhud.
- Listeners do not raise their hands during the Friday khutbah, since they must listen in silence.
Some scholars outside the Hanafi school do not raise their hands for a regular dua after every fard prayer, holding that it is not reported as a fixed habit. The Hanafi position rests on the general hadith above, and either way it should never be treated as part of the salah. For the end of the dua, see wiping your face after dua, and for the full manners, how to make dua properly.
The evidence
Quran, Surah Al-A'raaf 7:55
ٱدْعُوا۟ رَبَّكُمْ تَضَرُّعًۭا وَخُفْيَةً ۚ إِنَّهُۥ لَا يُحِبُّ ٱلْمُعْتَدِينَ ﴿٥٥﴾
Call upon your Lord in humility and privately; indeed, He does not like transgressors.
Raising the hands is one expression of the humility this ayah asks for.
Sunan Abi Dawud 1488
Graded sahih... إن ربكم تبارك وتعالى حيي كريم يستحيي من عبده إذا رفع يديه إليه أن يردهما صفرا ...
"Your Lord is shy and generous; He is shy, when His servant raises his hands to Him, to return them empty."
Raising the hands is a means of dua being answered.
Sunan Abi Dawud 1486
Graded hasan sahih... إذا سألتم الله فاسألوه ببطون أكفكم ولا تسألوه بظهورها ...
"When you ask Allah, ask Him with the palms of your hands, not with their backs."
Shows how to hold the hands.
Sahih al-Bukhari 6341
Sahih... رفع يديه حتى رأيت بياض إبطيه ...
"He raised his hands until I saw the whiteness of his armpits."
The Prophet raised his hands in dua.
Where the ruling is recorded
- Nur al-Idah with Maraqi al-Falah, Chapter on the adhkar after the prayer. Raising the hands for dua after the prayer, with the palms toward the sky.
- Radd al-Muhtar (Ibn Abidin), Kitab al-Salah, chapter on the description of prayer, discussion of dua after the salam. The manners of dua after the prayer.
This answer is pending review by the scholars on our team. Quran translation by Sahih International. Hadith Arabic from the standard editions of the six books and the Muwatta, with gradings as recorded there; the English is our own rendering. Spotted a mistake? Tell us.