Explanation

The Messenger of Allah (may Allah's peace and blessings be upon him) was sitting in the mosque with his Companions when three men arrived. Two of them came in and the third left. One saw an empty space in the circle and sat in it. The other one sat behind the circle. When the Prophet (may Allah's peace and blessings be upon him) had finished his talk, he told his Companions about the three men. One of them sought refuge with Allah, and Allah gave him refuge, which means that he sat in the empty space that he found to listen to the mention of Allah. So, Allah blessed him with the virtue of sitting in that gathering. The second one felt shy, and Allah was shy towards him, which means that he did not jostle for the place and sat behind the circle. So, he was not denied the blessings of that gathering. The last one turned away, and so Allah turned away from him. This man left without any excuse. That is why he was denied the blessing of that gathering.