Assalamu 'Alaikum wa Rahmatullah wa Barakatuh
Bismillahir Rahmanir Rahim

What is Khushoo'?
Khushoo' means reverence i.e. an act of showing respect.

But what is Khushoo' in Salah.
Khushoo' in Salah has many possible translations which include tranquility, humility, calmness, serenity and submission. Ultimately, it is the state one wants to achieve during Salah.
Ibn al-Qayyim (may Allah be pleased with him) said:
"The Khushoo' of true faith is when the heart feels aware and humble before the greatness and glory of Allah, and is filled with awe, fear and shyness, so that the heart is utterly humbled before Allah and broken, as it were, with fear, shyness, love and the recognition of the blessings of Allah and its own sins." [Kitab Al-Ruh].

So we now know the meaning of Khushoo' in Salah but what about its importance, these are some points gathered from the Qur'an and Hadith:

1. Salah is the only obligation/ act of worship that was gifted to our beloved Prophet Muhammad (peace be upon him) by Allah SWT in the Heavens.

2. Also in a Hadith reported by Imams Ahmad, Abu Dawood, An-Nisa'i and Al-Hakim, the prophet (peace be upon him) taught us that Salah is the first thing to be accounted for on the Day of Judgement.

3. In the Qur'an, Khushoo' is associated with success (i.e. forgiveness and reward of Paradise). Allah SWT says in Suratul Mu'minoon, verses 1&2 :
"Certainly will the believers have succeeded. They who are during their prayer humbly submissive."

4. Also Allah SWT tells us in Qur'an that the believing men and women who have khushoo' in Salah are among those whom He has promised forgiveness and a great reward. (Suratul Ahzaab, verse 35).

5. In another verse, Allah SWT says:
"And seek help in patience and al-salah (the prayer), and it is truly extremely heavy and hard except for al-khushoo'..." (Suratul Baqarah, verse 45).

All these points show us that Khushoo' in Salah is a fundamental component of a complete and rewarding Salah, it is also very important in order to attain the utmost spiritual connection with Allah.

In Shaa Allah with this article I hope you understand the meaning and importance of Khushoo' in Salah but not just in Salah but in everything that we do.

Assalamu 'Alaikum wa Rahmatullah wa Barakatuh

P.S. In the upcoming articles, In Shaa Allah, I will provide you with the 30 top tips to attain Khushoo' in Salah. these tips will be divided int 3 categories:
-Before Salah
-During Salah
-After Salah

Jazakumullahu Khairan

Ma Assalma.