Dear Editor of International Journal of Heat and Mass Transfer, In this letter, I attempt to draw your attention to the fact that the above work that have been published in your highly respectful journal by Hasona et al. (2018) is not original. As the main idea upon which their results have been established is basically plagiarized from another published work and not genuine as the authors claimed. The investigation has been done recently for the first time in the peristaltic literature by Elogail and Elshekhipy (2018). In addition, in the coming few pages, I prove that all the results obtained in Hasona et al. work are significantly incorrect. Also, I elaborate on some of the numerous mistakes in their paper with suggested corrections for your knowledge, as it worth attracting the reader's attention for such misleading study. Taking into account all the above, I wrote these comments. (C) 2018 Elsevier Ltd. All rights reserved.