Sunan Ibn Majah 447
سنن ابن ماجه#447SahihIt was narrated that Ibn 'Abbas said:'The Messenger of Allah said: 'When you get up for prayer, perform ablution properly and make the water run between your toes and your fingers
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniHasan Sahih
Muhammad Fouad Abd al-BaqiHasan Sahih
Shuaib Al ArnautSahih Lighairihi
Zubair Ali ZaiHasan
In-book reference: 1:181