Nay, (do not do like this), indeed it (these Verses of this

﴿كـَلَّآ إِنَّهَا تَذۡكِرَةٞ ﴾
[عَبَسَ: 11]

Nay, (do not do like this), indeed it (these Verses of this Quran) are an admonition

﴿كلا إنها تذكرة﴾ [عَبَسَ: 11]

Al Bilal Muhammad Et Al
By no means should this be so, for it is indeed a message of instruction

Ali Bakhtiari Nejad
No way, it (Quran) is a reminder

Ali Quli Qarai
No indeed! These [verses of the Quran ] are a reminder

Ali Unal
No indeed! It surely is a reminder and an admonition (that suffices for all who come to it with an open heart)

Hamid S Aziz
Nay! Verily, it is an admonishment (or a message of instructions)

John Medows Rodwell
Nay! but it (the Koran) is a warning

Literal
No, but that it truly is a reminder

Mir Anees Original
No, it is certainly a reminder

Mir Aneesuddin
No, it is certainly a reminder