BENEFIT ON HADITH:
First, the six kalimas are not found anywhere altogether either in Quran Majeed or Hadith. They are authentic forms of prayers which can be offered and their purpose seems to be educational, learning , especially for children, Kids, Toddlers or new Muslims as they are a best based to learning about Islam.
Pronunciation Forth Kalima ( Kalima Tauheed )
According to this hadith Shareef, those who recite the Forth Kalima – La ilaha illallahu, wahdahu la sharika lahu, lahul-mulku wa lahul-hamdu, wa Huwa ala kulli sha’in Qadir 100 times in a day would be rewarded as if they freed 10 (Ten) slaves, would receive 100 (Hundred) credit and 100 (Hundred) sins will be forgiven.a