Should all of one's fingers be reaching the knees when bowing in prayer? Should they be position at the upper part of the knee bones?

Salah (Prayers)Ruku'
Should all of one's fingers be reaching the knees when bowing in prayer? Should they be position at the upper part of the knee bones?
Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 3 years ago

It is compulsory during Rokoo' ركوع to make your hand touch your knee even if your figure touch your knee. If your hand did not touch your knee during Rokoo', your Rokoo' will be invalid.

Wassalam.