It is narrated from Hazrat Imran bin Husain (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: The best era of this Ummah is the one in which I have been sent, then the era of those who come after them, then there will come a people who will make vows but will not fulfill them, they will be treacherous and will not be trustworthy, they will be ready to give testimony though it will not be asked from them, and obesity will become common among them.