Hazrat Mufti Ebrahim Salejee (Daamat Barakaatuhu) mentioned:
Shaytaan abhors seeing a person making zikr because the Quraan Shareef terms zikr as the greatest thing. When a person does this, life comes into all his other actions as well. Therefore, Shaytaan makes every effort to stop a person from zikr especially by frustrating him. Once a person is frustrated he will omit whatever he is doing. Remember, every effort, even a broken one, undertaken in order to establish the zikr of Allah Ta‘ala is highly appreciated in the court of Allah Ta‘ala.