Invocation for Entering A Market and its Tremendous Reward :

لا إلهَ إلاّ اللّه وحدَهُ لا شريكَ لهُ، لهُ المُلْـكُ ولهُ الحَمْـد، يُحْيـي وَيُميـتُ وَهُوَ حَيٌّ لا يَمُـوت، بِيَـدِهِ الْخَـيْرُ وَهوَ عَلىَ كلّ شيءٍ قَدِيرٌ

Laa ‘ilaaha ‘illallaahu wahdahu laa sharika lahu, lahul-mulku wa lahul-hamdu, yuhyi wa yumitu, wa Huwa hayyun laa yamutu, biyadihil-khayru, wa Huwa ‘alaa kulli shay’in Qadir.

None has the right to be worshiped but Allah alone, Who has no partner. His is the dominion and His is the praise. He brings life and He causes death, and He is living and does not die. In His Hand is all good, and He is Able to do all things.

 
[Reference: At-Tirmithi 5/291, and Al-Hakim 1/538. Al-Albani graded it good in Sahih Ibn Majah 2/21 and Sahih At-Tirmithi 3/152.]