It is narrated from Abu Hazim (may Allah have mercy on him) that he said: I saw Sayyiduna Abu Hurairah (may Allah be pleased with him) performing ablution, and he was letting the water reach up to his armpits. I asked him the reason for this, so he said: Indeed, I heard the Messenger of Allah (peace and blessings be upon him) say: "Verily, the adornment (of the believer) will reach up to the places touched by ablution." (That is why I am letting the water reach up to my armpits.)
Hadith Referenceصحيح ابن خزيمه / كتاب: الوضوء / 7
Hadith Takhrij«صحيح مسلم ، كتاب الطهارة باب تبلغ الحلية حيث يبلغ الوضوء ، رقم: 250 ، سنن نسائي ، رقم: 149 ، مسند احمد ، رقم: 371/2 ، ابن حبان رقم: 1045 - من طريق على بن مسهر»