Hawzah News Agency – The merciful prophet of Islam, peace be upon him and his household says:

المؤمنونَ تَتَكافَأُ دِماؤهُم، وهُم يَدٌ على‏ مَن سِواهُم، ويَسعى‏ بذِمَّتِهم أدْناهُم.

'The believers' blood is coequal, and they are one hand against others, the most inferior among them is empowered by their protection [of him].'

Source: Kanz al-Ummal, no. 402