Published in 1983, Inner Dimensions of Islamic Worship is an English translation of selections from Imam al-Ghazali's Ihya' 'Ulum ud Din by Muhtar Holland, a convert.
This book is a very short but powerful and inspiring exploration of the rites of Islamic Worship — Prayer, Fasting, Almsgiving, Pilgrimage, Night Vigil, Invoking blessing upon Allah's Messenger صلى الله عليه وآله وسلم and the merit of seeking forgiveness.
It is supported by numerous references from the Holy Quran and Ahadith which was very nice to see. Instances from the life of Prophet Muhammad صلى الله عليه وآله وسلم are also included to re-affirm the faith of the reader.
It was a surprisingly faith-affirming read for me, I enjoyed the foreword very much and by the end, I was quite moved.
But, what really, really bothered me was the usage of the vague word God instead of the many names of Allah which have a proper context and meaning, only the English translations of the Quran not the actual text but the transliteration (which I know is helpful but the Arabic should have been included too for complete understanding, inspiration and reward) and the Biblical names of the Prophets and the angels instead of the Quranic names at the risk of resemblance to Christianity or Judaism, inconsistencies which I attribute to the translator. This book is kind of dated so another thing to be taken into account is that it is better to invoke your blessings on the Prophets, the Companions and saints in Arabic to take the most reward regardless of language. I'm especially mentioning this so that the future reader may be aware of these discrepancies, I suggest replacing these with their better equivalents whether you're reading aloud or silently. These are the reasons I gave the book 4 stars, not 5.
Otherwise, it was a very compelling, overwhelming and a rewarding read. The references are very strong and beautiful. The book is brief but brings to light many of the things not thought about or paid attention to on a daily basis but which really should. The title Inner Dimensions is very apt as the book focuses on the inner depth of Islamic worship instead of jurisprudence. The effort should be recognized as taking the best of a 4-volume Arabic book and bringing it to the average reader's attention and ease by translating it to English being as succinct as one can is an amazing feat. I, myself, have been able to get introduced to and read Imam al-Ghazali's Ihya', which is regarded as the greatest work of Muslim spirituality, only through this translation. Read this if you want an in-depth yet concise understanding of daily Islamic Worship.