Diantara perkara yang perlu diperhatikan ketika sholat, seorang tidak boleh menutupi mulutnya dengan sesuatu apapun, baik berupa tangan, kain, masker, dan lainnya.
Seorang dilarang shalat dalam keadaan menutupi mulut berdasarkan hadits dari Abu Hurairah -radhiyallahu ‘anhu-,
"Sesungguhnya Rasulullah -Shollallahu ‘alaihi wasallam- melarang sadel dalam shalat dan seseorang menutupi mulutnya". [HR. Abu Dawud (643), At-Tirmidziy (378), Ibnu Khuzaimah (772), Ahmad (2/295 & 341), dan Al-Hakim (1/253). Di-hasan-kan oleh Syaikh Al-Albaniy Al-Atsariy dalam Takhrij Al-Misykah (764)]
Jadi, seorang dilarang menutupkan tangan pada mulut ketika shalat, kecuali jika sedang menguap, maka justru disunnahkan untuk meletakkan (menutupkan) tangan pada mulut, karena Nabi -Shallallahu ‘alaihi wa sallam- bersabda,
"Jika salah seorang dari kalian menguap, hendaklah dia menahan (menutup) mulutnya dengan tangan, karena sesungguhnya setan akan masuk". [HR. Muslim dalam Shohih-nya (2995)]
Maka seorang diberi keringanan untuk menutupi mulutnya dengan menggunakan tangannya saat ia menguap dalam sholat. Tapi seusai menguap, ia kembali sebagaimana biasanya, tanpa menutupi mulutnya lagi.
The most plausible explanation, and the one that is taught in medical school, is that we yawn because oxygen levels in our lungs are low.
The most plausible explanation, and the one that is taught in medical school, is that we yawn because oxygen levels in our lungs are low. Studies have shown that during normal, at-rest breathing, we don’t use anywhere near our lung capacity; for the most part, we just use the air sacs at the bottom of the lungs. If the air sacs, called alveoli, don’t get fresh air, they partially collapse and the lungs stiffen a bit. As a result, it’s believed, our brain prompts the body to either sigh or take a yawn to get more air into the lungs.
But certain aspects of yawning remain even more mysterious. Fetuses, for instances, have been observed yawning in the womb, yet it’s known that they don’t take oxygen in through their lungs. And yawning seems to be a symptom of multiple sclerosis and other medical conditions, for reasons unclear.
What's behind this mysterious epidemic of yawning? First, let's look at what a yawn is. Yawning is an involuntary action that causes us to open our mouths wide and breathe in deeply. We know it's involuntary because we do it even before we are born. Research shows that 11-week-old fetuses yawn.
Common Yawning TheoriesWhile the dictionary tells us that yawning is caused by being fatigued, drowsy or bored, scientists are discovering that there is more to yawning than what most people think. Not much is known about why we yawn or if it serves any useful function, and very little research has been done on the subject. However, there are several theories about why we yawn. Here are the three most common theories:
The average yawn lasts about six seconds. Your heart rate can rise as much as 30 percent during a yawn. 55 percent of people will yawn within five minutes of seeing someone else yawn. Blind people yawn more after hearing an audio tape of people yawning. Reading about yawning will make you yawn. Olympic athletes often yawn before competition. The simple truth is that even though humans have been yawning for possibly as long as they have existed, we have no clue as to why we do it. Maybe it serves some healthful purpose. It does cause us to draw in more air and our hearts to race faster than normal, but so does exercise.