We understand that the more we adhere to Islam the more it would bring us happiness in this life and the hereafter. However there is a hadith whereby Abu Saeed Al-Khudri visited the Prophet (Pbuh) when he was unwell. He put his hand on a piece of velvet cloth with which the Prophet (Pbuh) had very high temperature. Abu Saeed said: “Messenger of Allah, you have a very high fever”. He said: “We are like this: our trials are very hard and our reward is multiplied.” Abu Saeed asked: “Messenger of Allah, which people have the greatest affliction?” He replied: “The Prophets (Pbuh), and then the most pious and righteous. Any one of them may be tested with poverty until he could find nothing more than a robe to cover himself with and he would wear that. Another could be tested with fleas until they almost killed him. They were more pleased with their affliction than any of you may be pleased with gifts.” (Related by Al-Bukhari in Al-Adab Al Mufrad).

This hadith implied that the stronger we adhere to Islam, the greater would be our affliction and hardship. That would mean we would suffer more and presumably would be less happy(in this world).Does not this situation contradict the premise that Islam would bring more happiness to those who adhere to it?

The hadith you mentioned highlights the concept that the greatest trials and afflictions are often faced by the Prophets and the most pious and righteous individuals. It acknowledges that their tests and hardships can be severe, leading them to endure challenging circumstances such as poverty or physical discomfort. However, it also emphasizes that despite the difficulties they face, these individuals find contentment and satisfaction in their devotion to Allah and their unwavering faith.

It is important to note that Islam does not promise a life devoid of trials or hardships. Rather, Islam teaches believers to have patience and perseverance in the face of challenges, trusting that they are part of a divine plan. These trials can be viewed as tests of faith and opportunities for personal growth. The ability to remain steadfast and patient during difficult times is ultimately rewarded in the hereafter.

While adhering to Islam does not guarantee a life free from problems, it does provide guidance and principles to navigate through life's challenges. Islam encourages believers to cultivate qualities such as gratitude, contentment, and reliance on Allah in order to find inner peace and happiness. It teaches that true happiness is not solely derived from worldly possessions, but from a deep connection with Allah and a life lived in accordance with His teachings.

Therefore, while adhering to Islam may not shield individuals from hardships, it provides a framework for finding solace and contentment amidst adversity. The hadith you mentioned serves as a reminder that even in the face of great trials, the Prophets and the righteous maintain a higher level of happiness and satisfaction due to their unwavering faith and trust in Allah.