How does a Muslim realize the saying of the Prophet (peace and blessings be upon him): "Whoever fasts Ramadan out of faith and seeking reward..."

The questioner : Peace be upon you, and Allah's mercy and blessings. Raise your voice, the Shaykh is with you.

The Shaykh : and Allah's mercy and blessings.

The questioner : And upon you be peace, and the mercy of Allah and His blessings.

The Shaykh : Brother Muhammad, may Allah guide you, how are you?

The questioner : I am well, praise be to Allah.

The Shaykh : May Allah prolong your life in His obedience and grant you a good ending, Shaykh, how are you?

The questioner : Amen, please proceed. I have three questions, may Allah preserve you, Shaykh. The first question is: How does a Muslim realize the hadith of the Messenger (peace and blessings be upon him): "Whoever fasts Ramadan out of faith and seeking reward, his previous sins are forgiven"?

The Shaykh : He realizes it by law.

The questioner : And by faith in its obligation, and by seeking the reward for it.

The Shaykh : Yes, Shaykh Muhammad. And the hadith of the Messenger (peace and blessings be upon him): "Whoever stands in prayer in Ramadan out of faith and seeking reward," how is this realized here as well?

The questioner : I said: faith in Allah, and faith that this fasting is obligatory, and seeking the reward of Allah.

The Shaykh : May Allah reward you.