بِسْمِ ٱللَّٰهِ ٱلرَّحْمَٰنِ ٱلرَّحِيمِ
السلام عليكم ورحمة الله وبركاته
As Salaamu Alaikum wa Rahmatullahi wa Barakatuh,
We hope this message finds you in good health and high Islamic spirit.
We are not aware of this specific fatwa. However, according to the rulings of Grand Ayatollah Sayyid Abu al-Qasim al-Khoei in his book, praying with cat hair on one’s clothing invalidates the prayer.