Power Of Group Prayer, Enhanced Attunement To Divine In A Group Options

Prayer done in a group is far more effective than when done alone because the spiritual cord connecting your crown chakra to the Divine Source increases in its area tremendously. I would like to support my contention through the following example :
Mahatma Gandhi was a fragile & frail man weighing about 40 kilo grams. He was not at all spiritual and was a man of average intelligence. But he regularly held prayer sessions twice a day each one lasting not more than 15 minutes. About 30 persons on an average attended his each prayer session. But through these prayer sessions, he was able to garner so much energy as to unshackle colonial imperialistic yoke. He carried burden of the sub-continent effortlessly on his tiny shoulders.
Gandhi's early life was less than normal which is illustrated by the following anecdotes :-
(i) When his father was on death-bed, he was with a prostitute. Some body planted news of his father's death into his ears and then only he hurried away to his home.
(ii) He married as a boy. When his wife was in an advanced stage of pregnancy, he pounded into her despite fierce protests from her. A half-dead child was born who died immediately afterwards.

The child who died immediately after his birth was the first-born of Gandhis and he had been born before the first known son Harilal Gandhi.

Could you please quote your source for this information.
Thanks.