Praise be to Allah.
What is prescribed is to focus on the meaning of the words one is uttering so that one may attain the benefit of dhikr (remembering Allah). Therefore you should strive to reflect upon what you are saying when you recite dhikr. Then if the heart becomes distracted sometimes, there is no blame on you, in sha Allah. We advise you to seek refuge a great deal with Allah from the Shaytaan when you experience waswasah (whispers from the Shaytaan; compulsive thoughts).
And Allah is the source of strength. May Allah send blessings and peace upon our Prophet Muhammad and his family and companions. End quote.
Permanent Committee for Scholarly Research and Ifta’
Shaykh ‘Abd al-‘Azeez ibn ‘Abdillah ibn Baaz, Shaykh ‘Abdullah ibn Ghadyaan, Shaykh Saalih al-Fawzaan, Shaykh ‘Abd al-‘Azeez Aal ash-Shaykh, Shaykh Bakr Abu Zayd
Fataawa al-Lajnah ad-Daa’imah li’l-Buhooth al-‘Ilmiyyah wa’l-Iftaa’ (24/244)