The narrator Anas added that the Prophet ﷺ raised his hands (during the invocation) to such an extent that the whiteness of his armpits was visible.

عَنِ النَّبِيِّ ﷺ أَنَّهُ رَفَعَ يَدَيْهِ حَتَّى رَأَيْتُ بَيَاضَ إِبْطَيْهِ

The Prophet ﷺ never raised his hands for any invocation except for that of Istisqa' and he used to raise them so much that the whiteness of his armpits became visible. (Note: It may be that Anas did not see the Prophet ﷺ raising his hands, but it is narrated that the Prophet ﷺ used to raise his hands for invocations other than Istisqa. See Hadith No. 807 & 808 and also see Hadith No. 612, Vol. 5).

كَانَ النَّبِيُّ ﷺ لاَ يَرْفَعُ يَدَيْهِ فِي شَىْءٍ مِنْ دُعَائِهِ إِلاَّ فِي الاِسْتِسْقَاءِ وَإِنَّهُ يَرْفَعُ حَتَّى يُرَى بَيَاضُ إِبْطَيْهِ

Narrated Anas, "The Prophet ﷺ raised his hands (in invocation) till I saw the whiteness of his armpits."

عَنِ النَّبِيِّ ﷺ رَفَعَ يَدَيْهِ حَتَّى رَأَيْتُ بَيَاضَ إِبْطَيْهِ

I saw the Messenger of Allah ﷺ raising his hands (high enough) in supplication (for rain) that the whiteness of his armpits became visible.

رَأَيْتُ رَسُولَ اللَّهِ ﷺ يَرْفَعُ يَدَيْهِ فِي الدُّعَاءِ حَتَّى يُرَى بَيَاضُ إِبْطَيْهِ

"The Messenger of Allah ﷺ did not raise his hands during any supplication except when praying for rain, when he used to raise his hands so high that the whiteness of his armpits could be seen." (Using translation from Nasāʾī 1513)

«كَانَ رَسُولُ اللَّهِ ﷺ لَا يَرْفَعُ يَدَيْهِ فِي شَيْءٍ مِنَ الدُّعَاءِ إِلَّا فِي الِاسْتِسْقَاءِ»

[AI] I saw the Messenger of Allah ﷺ prostrating and folding his arms until I saw the whiteness of his armpits.

رَأَيْتُ رَسُولَ اللهِ ﷺ سَاجِدًا مُخَوِّيًا حَتَّى رَأَيْتُ بَيَاضَ إِبْطَيْهِ

[AI] I saw the Prophet ﷺ prostrating, his armpits were so close to the ground that the whiteness of his armpits could be seen.

رَأَيْتُ النَّبِيَّ ﷺ سَاجِدًا قَدْ خَوَّى حَتَّى يُرَى بَيَاضُ إِبْطَيْهِ

[AI] I contemplated the Messenger of Allah ﷺ and I saw him prostrating, his armpits were visible in white.

تَدَبَّرْتُ رَسُولَ اللهِ ﷺ فَرَأَيْتُهُ سَاجِدًا مُخَوِّيًا وَرَأَيْتُ بَيَاضَ إِبْطَيْهِ

[AI] The translation of the passage is: "When the Messenger of Allah ﷺ prostrated, his armpits would become visible or I would see the whiteness of his armpits."

كَانَ رَسُولُ اللهِ ﷺ إِذَا سَجَدَ رُئِيَ أَوْ رَأَيْتُ بَيَاضَ إِبِطَيْهِ

[AI] That the Prophet ﷺ raised his hands until the whiteness of his armpits could be seen.

أَنَّ النَّبِيَّ ﷺ رَفَعَ يَدَيْهِ حَتَّى رُئِيَ بَيَاضُ إِبِطَيْهِ

[AI] The Messenger of Allah ﷺ used to raise his hands in supplication until the white color of his armpits could be seen.

كَانَ رَسُولُ اللهِ ﷺ يَرْفَعُ يَدَيْهِ فِي الدُّعَاءِ حَتَّى يُرَى بَيَاضُ إِبْطَيْهِ

[AI] The Messenger of Allah ﷺ used to bow down in prostration until the whiteness of his armpits could be seen.

كَانَ رَسُولُ اللهِ ﷺ إِذَا سَجَدَ جَافَى حَتَّى يُرَى بَيَاضُ إِبْطَيْهِ

[AI] "I saw the Messenger of Allah ﷺ begin the prayer and he raised his hands until he reached his ears with them."

رَأَيْتُ رَسُولَ اللهِ ﷺ افْتَتَحَ الصَّلَاةَ فَرَفَعَ يَدَيْهِ حَتَّى جَاوَزَ بِهِمَا أُذُنَيْهِ

[AI] I saw the Messenger of Allah, ﷺ , raising his hands when he started the prayer.

رَأَيْتُ رَسُولَ اللهِ ﷺ حِينَ افْتَتَحَ الصَّلَاةَ رَفَعَ يَدَيْهِ

[AI] I saw the Messenger of Allah ﷺ raise his hands when he began the prayer.

رَأَيْتُ رَسُولَ اللهِ ﷺ حِينَ افْتَتَحَ الصَّلَاةَ رَفَعَ يَدَيْهِ.

Wa’il b.Hujr said that he saw the Messenger of Allah ﷺ raise his hands when he uttered the takbir (Allah is most great). (Using translation from Abū Dāʾūd 725)

رَأَيْتُ رَسُولَ اللهِ ﷺ يَرْفَعُ يَدَيْهِ مَعَ التَّكْبِيرِ

[AI] The translation of the given Arabic sentence is: "The Prophet ﷺ used to raise his hands in supplication until the whiteness of his armpits was visible."

«كَانَ النَّبِيُّ ﷺ يَرْفَعُ يَدَيْهِ فِي الدُّعَاءِ حَتَّى يُرَى بَيَاضُ إِبْطَيْهِ»

"The Messenger of Allah ﷺ did not raise his hands during any supplication except when praying for rain, when he used to raise his hands so high that the whiteness of his armpits could be seen." (Using translation from Nasāʾī 1513)

كَانَ رَسُولُ اللَّهِ ﷺ «لَا يَرْفَعُ يَدَيْهِ فِي شَيْءٍ مِنَ الدُّعَاءِ إِلَّا فِي الِاسْتِسْقَاءِ فَإِنَّهُ كَانَ يَرْفَعُ يَدَيْهِ حَتَّى يُرَى بَيَاضُ إِبْطَيْهِ»

قَالَ كَانَ نَبِيُّ اللَّهِ ﷺ يرفع يديه في الدعاء حتى يرى بياض إبطيه أبو أيوب الأزدي

[AI] "The Messenger of Allah, ﷺ , used to lower his forehead to the ground in prostration until the whiteness of his armpits was visible."

«كَانَ رَسُولُ اللهِ ﷺ إِذَا سَجَدَ جَافَى حَتَّى يُرَى بَيَاضُ إِبْطَيْهِ»

[AI] "That the Prophet ﷺ used to raise his hands when delivering a sermon until the whiteness of his armpits could be seen."

«أَنَّ النَّبِيَّ ﷺ كَانَ يَرْفَعُ يَدَيْهِ إِذَا خَطَبَ حَتَّى يُرَى بَيَاضُ إِبْطَيْهِ»

[AI] The Messenger of Allah ﷺ used to have his armpits visible when he prostrated.

كَانَ رَسُولُ اللهِ ﷺ «يُرَى بَيَاضُ إِبْطَيْهِ إِذَا سَجَدَ»

[AI] I saw the Messenger of Allah ﷺ when he would raise his hands until they reached his ears.

«رَأَيْتُ رَسُولَ اللهِ ﷺ حِينَ يُوجِبُ يَرْفَعُ يَدَيْهِ حَتَّى يَبْلُغَا أُذُنَيْهِ»

I saw the Messenger of Allah ﷺ raising his hands (high enough) in supplication (for rain) that the whiteness of his armpits became visible. (Using translation from Muslim 895a)

«كَانَ رَسُولُ اللهِ ﷺ يَرْفَعُ يَدَيْهِ فِي الدُّعَاءِ حَتَّى تُرَى إِبْطَاهُ»