Arabic hadith text
وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ عَبْدَ اللَّهِ بْنَ مَسْعُودٍ، كَانَ يَدِبُّ رَاكِعًا ‏.‏
Translation

Yahya related to me from Malik that he had heard that Abdullahibn Masud used to move forward while in ruku.